Tap the blue circles to see an explanation.
$$ \begin{aligned}4+4i-(-10+2i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4+4i+10-2i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}2i+14\end{aligned} $$ | |
① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -10+2i \right) = 10-2i $$ |
② | Combine like terms: $$ \color{blue}{4} + \color{red}{4i} + \color{blue}{10} \color{red}{-2i} = \color{red}{2i} + \color{blue}{14} $$ |